A fired up Andrew Davies gave Remainers both barrels as he pleaded for them to show "humility" and admit that much of their "apocalyptic" vision had not come to pass, during an interview with BBC Wales.
The Remain campaign, led by George Osborne and David Cameron, repeatedly warned of the devasting impact of a Leave vote – including threats of an immediate financial shock.
Such gloomy predictions have yet to occur, causing gloating Brexiteers to mock and ridicule such proclamations.
"What I haven’t had is an apology from people who tried to encourage people to vote for remain with an economic nightmare they paint if people voted to leave," Mr Davies blasted.
"We were supposed to be at this stage in the cycle right now, where the economy had collapsed, unemployment that was running out of control and banks that were running out of money."
The Welsh Tory leader let rip during a interview on BBC Wales
I haven’t heard a single apology from those who painted the apocalyptic vision that if people voted out on June 23rd – on June 24th the skies would fall in
Andrew RT Davies
"What we have got now is the strongest economic growth in western Europe and indeed in the OECD.
"We have record people in employment, we have record amounts of money making its way into capital investment projects, into transport and other investment projects across the United Kingdom.
"We have a low-interest rate that hasn't been seen in the last 50-60 years.
"I haven’t heard a single apology from those who painted the apocalyptic vision that if people voted out on June 23 – on June 24 the skies would fall in.
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Continued cooperation with the EU to tackle terrorism and international crime.
"I’m prepared to be held to account for everything I said during the referendum campaign. I stand by every word I said in that referendum campaign and I will fight tooth and nail to deliver that."
"But let's have a bit of humility from people on the other side of that campaign who give such nightmare scenarios that frighten so many people," he added.
Much of the Remain campaign hinged on warnings of economic uncertainty that would come to pass if Britain withdrew from the trade block.
However, since the June referendum, GDP growth has continued at rate faster than in many neighbouring countries and unemployment remains low compared with historical levels.